STEARETH-3 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

STEARETH-3

Safety grade: A

Steareth-3 is a gentle cleaning and blending ingredient made from stearic acid (a fatty acid found in animal and plant oils) combined with ethylene oxide. It helps oil and water mix together smoothly in cosmetic products.

This ingredient works as an emulsifier and surfactant to help combine oil and water-based ingredients, creating a smooth, stable product texture while gently cleansing the skin.

Graded using: COSING.

Last verified: May 26, 2026